RuuviTag sensor contains a coin cell battery and it can be hazardous if swallowed. Keep the device always out of reach of children and install it to a location which is not accessible by young children.
WARNING
Swallowing can lead to chemical burns, perforation of soft tissue, and death. Sever burns can occur withing 2 hours of ingestion. Seek medical attention immediately if swallowed or placed in any part of the body.
Wrap used batteries in sticky tape and take them to the nearest recycling center.
Australian Poison Information Hotline 13 11 26